<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css"></style>
		<script type="text/javascript">
			let num1 = 10;
			let num2 = 5;
			let num3 = 4;
			
			
			let result  = num1+5;
			
			// num1  = num1+5;
			num1  +=5;
			console.log("num1",num1) // 15
			num1  -=5;  //num1= num1-5
			console.log("num1",num1) //10
			num1  *=2;  //num1= num1*2
			console.log("num1",num1) //20
			num1  /=4;  //num1= num1*4
			console.log("num1",num1) //5
			
			num1  %=4;  //num1= num1%4
			console.log("num1",num1) //1
			
			
			console.log("20/6",20/6);
			
			
			
			
		</script>
	</head>
	<body>


	</body>
</html>